CN217438574U - Steel rail insulation isolation system - Google Patents
Steel rail insulation isolation system Download PDFInfo
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- CN217438574U CN217438574U CN202221343171.0U CN202221343171U CN217438574U CN 217438574 U CN217438574 U CN 217438574U CN 202221343171 U CN202221343171 U CN 202221343171U CN 217438574 U CN217438574 U CN 217438574U
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- rail
- steel rail
- insulating layer
- insulation
- steel
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- 238000009413 insulation Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 238000002955 isolation Methods 0.000 title claims abstract description 28
- 238000013016 damping Methods 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 18
- 239000010935 stainless steel Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a rail insulation isolation system, relating to the technical field of rail equipment, comprising an insulation isolation device arranged on a rail, gauge blocks are arranged on the two corresponding sides of the steel rail, a lower vibration damping base plate of the steel rail is arranged at the bottom of the steel rail, the insulation isolation device comprises an insulation layer coated on the outer wall of the lower part of the steel rail, the creepage clearance between the fastener and the steel rail is increased by arranging the steel rail insulation isolation system, the insulation resistance (wet state) of the fastener system is effectively improved, thereby avoiding the harm caused by stray current, and aiming at new line design or old line reconstruction, the installation of the steel rail insulation isolation system has almost no influence on the original design, only the rail gauge block needs to be replaced (the cost is extremely low), and the elastic stroke of the elastic strip is controlled not to change, the buckling force of the elastic strip is not affected, so that the strength safety of the elastic strip and the safety stability of the fastener are ensured.
Description
Technical Field
The utility model relates to a rail fastener technical field especially relates to a rail insulation isolation system.
Background
Because the steel rail cannot be completely insulated from the ground, in a direct-current traction power supply system, traction current cannot flow back to a traction substation from the steel rail, one part of the traction current flows into the ground, a metal pipeline or a steel bar structure along the line through the steel rail and then returns to the traction substation from the ground, the metal pipeline or the steel bar structure along the line, and the part of the traction current is stray current which is also called stray current. Stray currents cause the following problems: (1) causing corrosion to the steel rails, the ballast bed and the structural steel bars in the tunnel. 2) The electric corrosion is caused to the metal line pipelines near the subway tunnel and the track bed, the service life is shortened, and the maintenance cost is increased. (3) The rectifier unit of the whole traction substation trips, so that large-range power failure of a contact net is caused, and normal operation of the subway is affected. (4) Causing excessive ground potential that may cause some devices to fail and even endanger personal safety. The problem of low transition resistance value exists in the design of rail ground insulation system among the prior art, to the reason that leads to low transition resistance value: the installation design of the rail ground insulation system only considers physical contact insulation, and does not consider the influence of factors such as material aging, environmental pollution, moisture, surface creepage distance and the like on the insulation performance.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application solves the problems existing in the prior art by providing the steel rail insulation isolation system, increases the creepage gap between the fastener and the steel rail by setting the steel rail insulation isolation system, and effectively promotes the insulation resistance (wet state) of the fastener system, thereby avoiding the harm caused by stray current.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a rail insulation isolation system, is including setting up the insulation isolation device on the rail, it is provided with the gauge block to correspond both sides on the rail, the rail bottom sets up the vibration damping backing plate under the rail, insulation isolation device is including the insulating layer of cladding on the outer wall of rail lower part.
In order to further optimize the utility model discloses, can prefer following technical scheme for use:
preferably, the top of the insulating layer is provided with a water diversion groove at the joint position of the top of the insulating layer and the two sides of the steel rail.
Preferably, a reinforcing part is arranged on the insulating layer corresponding to the water diversion groove.
Preferably, the under-rail vibration damping base plate and the insulating layer are integrally formed.
Preferably, a stainless steel wear-resisting plate matched with the shape of the outer wall of the steel rail is arranged between the insulating layer and the gauge block.
Preferably, the insulating layer is provided with a containing groove corresponding to the stainless steel wear-resistant plate, and the thickness values of the insulating layer corresponding to the containing groove and the bottom of the steel rail are smaller than those of other regions.
Preferably, the bottom of the gauge block is provided with an outward-expanding part, and the insulating layer is sprayed on the side wall of the bottom except for the area of the position of the gauge block.
Preferably, the stainless steel wear-resisting plate is matched with the section of the steel rail in shape, and the insulating layer is sleeved on the stainless steel wear-resisting plate
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. through setting up this rail insulation isolation system and having increased the creepage clearance between fastener and the rail, effectively promote the insulation resistance (wet attitude) of fastener system to avoid the harm that stray current brought.
2. Aiming at new line design or old line transformation, the installation of the steel rail insulation isolation system almost has no influence on the original design, only the gauge block needs to be replaced (the cost is extremely low), and the elastic stroke of the elastic strip is controlled not to change, namely the buckling pressure of the elastic strip is not influenced, so that the strength safety of the elastic strip and the safety stability of a fastener are ensured.
3. According to the steel rail insulation isolation system, the stainless steel plate is additionally arranged in the contact area of the insulation layer and the gauge block, so that the wear resistance and the long-term service safety stability of the insulation layer are effectively improved.
4. The insulating layer is pasted on the outer edge of the steel rail, wherein the rail bottom and the insulating layer in the contact area with the gauge block are properly thinned, the distance h from the top surface of the lower pad of the control rail to the top of the gauge block is unchanged, so that the buckling pressure of the control elastic strip is not changed to control the distance L between the two gauge blocks to be unchanged, the design of the elastic strip seat of the iron base plate is not influenced, the gauge block is transversely thinned appropriately in vertical thickness, and the effect is consistent with the reason.
5. A stainless steel plate is pasted on a contact area of the insulating layer and the gauge block, and the function of the stainless steel plate is to enhance the wear resistance of the insulating layer in the contact area; the top of the insulating layer is provided with a water diversion groove which is used for guiding water flow to the outer side of the fastener (longitudinally shown by a green arrow) to be reserved, so that the water flow is prevented from directly passing through the fastener
Drawings
FIG. 1 is a schematic diagram of the steel rail insulation isolation system in embodiment 1;
FIG. 2 is an enlarged view of the structure at A in example 1;
FIG. 3 is a top view of the steel rail insulation isolation system of example 1;
FIG. 4 is a schematic structural view of a steel rail insulation isolation system in example 2;
FIG. 5 is a schematic structural view of a steel rail insulation isolation system in example 3;
FIG. 6 is a front view of the steel rail insulation isolation system of example 4;
fig. 7 is a top view of the steel rail insulation isolation system of example 4.
The steel rail comprises a steel rail 1, an insulating layer 2, a vibration damping base plate under the steel rail 3, a stainless steel wear-resisting plate 4, a gauge block 5, a water diversion groove 6, a reinforcing part 7, other areas 8, an outward expansion part 9 and a water retaining wall 10.
Detailed Description
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example 1:
as shown in fig. 1-3, a rail insulation isolation system, including installing the insulation isolator on rail 1, correspond both sides on the rail and install the gauge block, rail bottom installation has rail lower damping backing plate 3, insulation isolator includes cladding insulating layer 2 on the outer wall of rail lower part, the holding tank has been seted up to corresponding stainless steel wear plate position on insulating layer 2, the thickness value that corresponds holding tank and rail bottom position on the insulating layer is less than other regional thickness values, the insulating layer is pasted at the rail outer fringe, the first layer adopts the higher silicon-based compound insulation parcel layer of volume resistivity to do the insulation parcel processing to rail bottom and waist, insulate the rail and keep apart with the fastener. The total thickness of the silicon-based composite insulating wrapping layer is 1 mm; the silicon-based composite insulation wrapping layer is divided into three layers: 1 st insulating layer, 2 nd reinforcing layer and 3 rd antifouling layer; is cold bonded with the steel rail. In addition, the room temperature vulcanized silicon-based materials are sprayed to key positions such as spring strips and spikes on the fasteners, so that the minimum creepage distance of the surfaces of the fasteners is increased, and the surface resistance of the system is improved.
The rail bottom and the insulating layer in the contact area with the rail gauge block 5 are properly thinned, and the distance h from the top surface of the lower rail gauge block to the top of the rail gauge block is controlled to be constant, so that the buckling pressure of the elastic strip is controlled to be unchanged, the distance L between the two rail gauge blocks is controlled to be unchanged, and the design of the elastic strip seat of the iron base plate is not influenced. In addition, the thickness of the gauge block 5 in the transverse direction and the vertical direction is properly reduced, and the effect is consistent with the reason. This product has increased the creepage clearance between fastener and the rail through setting up this rail insulation isolation system, effectively promotes the insulation resistance (wet attitude) of fastener system to avoid the harm that stray current brought. Aiming at new line design or old line reconstruction, the installation of the steel rail insulation isolation system has almost no influence on the original design, and only the rail gauge block needs to be replaced (the cost is extremely low). And the elastic stroke of the elastic strip is controlled not to change, namely the buckling pressure of the elastic strip is not influenced, so that the strength safety of the elastic strip and the safety stability of the fastener are ensured.
As a preferred scheme, the diversion grooves 6 are arranged at the joint positions of the top of the insulating layer and the two sides of the steel rail, the diversion grooves are used for guiding water flow to the outer side of the fastener (longitudinally, as shown by an arrow 3) to be left, so that the water flow is prevented from directly passing through the fastener, the reinforcing parts 7 are arranged on the insulating layer corresponding to the diversion grooves, the structural strength of the diversion grooves is ensured, and liquid pollutants such as oil, sewage and the like can be collected by a structure and then smoothly discharged out of the system; the anti-pollution area is designed at the bottom of the self-pollution discharge structure, so that the possibility of direct conduction of current from the surface of the system is avoided, and the creepage distance of the system is increased.
As the preferred scheme, a stainless steel wear-resisting plate 4 matched with the shape of the outer wall of the steel rail is arranged between the insulating layer and the gauge block, and the function of the stainless steel wear-resisting plate is to enhance the wear resistance of the insulating layer in the area, so that the wear resistance of the insulating layer and the safety and stability of long-term service are effectively improved.
Example 2:
as shown in fig. 4, the present embodiment 2 is different from embodiment 1 in that: the design of the integrated forming of the under-rail vibration damping base plate and the insulating layer in the product structure is convenient for production, assembly and installation, and other structural design details are the same as those of the embodiment 1.
Example 3:
as shown in fig. 5, the present embodiment 3 is different from embodiment 1 in that: in the scheme, the outer expanding part is arranged at the bottom of the gauge block, the insulating layer is sprayed on the side wall of the bottom except the area of the position of the gauge block, the outer size of the gauge block is increased (the outer expanding part 9), and the insulating material is sprayed in other areas (green areas), the insulating material used in the case is liquid when packaged, and is solidified after being sprayed, so that the purpose of increasing the creepage gap between the steel rail and the fastener is achieved through the two measures.
Example 4:
as shown in fig. 6 and 7, the difference between this embodiment 4 and other embodiments is that in this embodiment, the stainless steel wear plate 4 is made into an appearance matching the rail section, and an insulating layer is sleeved outside the stainless steel wear plate to make the insulating device have sufficient shape retention capability, so that the insulating device is directly fixed on the rail by means of buckling of the elastic strip and the gauge block, and no glue is needed for bonding, thereby reducing the processes of site construction, improving the reliability of use, and meanwhile, a water retaining wall 10 is installed on the wear-resistant layer corresponding to the lower part of the rail, wherein the water retaining wall also has a limiting effect at the position of the gauge block.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The utility model provides a rail insulation isolation system, is including setting up the insulation isolation device on the rail, its characterized in that: gauge blocks are arranged on the two corresponding sides of the steel rail, a lower vibration damping base plate of the rail is arranged at the bottom of the steel rail, and the insulation isolation device comprises an insulation layer coated on the outer wall of the lower portion of the steel rail.
2. A rail insulation system according to claim 1 wherein: and the joint positions of the top of the insulating layer and the two sides of the steel rail are provided with water diversion grooves.
3. A rail insulation system according to claim 1 wherein: and a reinforcing part is arranged on the insulating layer corresponding to the diversion trench.
4. A rail insulation system according to claim 1 wherein: and the under-rail vibration damping base plate and the insulating layer are integrally formed.
5. A rail insulation system according to claim 1 wherein: and a stainless steel wear-resisting plate matched with the shape of the outer wall of the steel rail is arranged between the insulating layer and the gauge block.
6. A rail insulation system according to claim 5 wherein: the stainless steel wear-resistant plate is characterized in that a containing groove is formed in the position, corresponding to the stainless steel wear-resistant plate, of the insulating layer, and the thickness values of the position, corresponding to the containing groove and the bottom of the steel rail, of the insulating layer are smaller than those of other regions.
7. A rail insulation system according to claim 1 wherein: the bottom of the gauge block is provided with an outward expansion part, and the insulating layer is sprayed on the side wall of the bottom of the steel rail except the area of the gauge block.
8. A rail insulation system according to claim 5 wherein: the appearance of stainless steel antifriction plate matches with the rail section, and the insulating layer cover is established on the stainless steel antifriction plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221343171.0U CN217438574U (en) | 2022-05-31 | 2022-05-31 | Steel rail insulation isolation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221343171.0U CN217438574U (en) | 2022-05-31 | 2022-05-31 | Steel rail insulation isolation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217438574U true CN217438574U (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221343171.0U Active CN217438574U (en) | 2022-05-31 | 2022-05-31 | Steel rail insulation isolation system |
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| Country | Link |
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| CN (1) | CN217438574U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116623477A (en) * | 2023-03-31 | 2023-08-22 | 北京首铁创联科技有限责任公司 | A Combined Replaceable Insulation Isolation System |
-
2022
- 2022-05-31 CN CN202221343171.0U patent/CN217438574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116623477A (en) * | 2023-03-31 | 2023-08-22 | 北京首铁创联科技有限责任公司 | A Combined Replaceable Insulation Isolation System |
| CN116623477B (en) * | 2023-03-31 | 2023-11-24 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
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